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Typically, scuba tanks are immersed in water to cool them as they are filled with compressed air. If a tank is initially charged to 3000.0 psi at 37 C and subsequently allowed to cool to 24 C, what is the final pressure in the tank?
I take 250.0 mL of 0.25 M NaCl and mix it with 500.0 Ml of 0.100 M NaCl. what is the concentration of NaCl in the mixture
How many litres of ethyl mercaptan (C2H5SH ; liquid density = 0.8931 g/cm^3) should be added to 100,000 standard cubic meters of natural gas to produce a concentration in the gas of 1ppm
The half life of Iodine-131 is 8.0252 days. If 14.2 grams of I-131 is released in Japan and takes 31.8 days to travel across the Pacific
the term vapor pressure almost always means the equilibrium vapor pressure. what pysical arrangement is needed to
"Hard" water contains relatively high concentrations of dissolved calcium ions. Calculate the solubility (in molarity) of CaHPO4·2H2O at 25°C in hard water that initially contains 95 mg/L of Ca2+
A cylinder equipped with a movable piston has a volume of 7.25 L under an applied pressure of 4.52 atm. what is the volume of the cylinder if we decrease
Determine the minimum excitation energy of an electron constrained to rotate in a circle of radius equal to the Bohr radius (the value of Bohr predicts for the electron-hydrogen distance in the n=1 state) around a fixed point.
A sample of gas has an initial volume of 13.8L at a pressure of 1.26 atm If the sample is compressed to a volume of 10.8L, what will its pressure be?
Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains .0011% Pb by mass. What volume of water in mL contains 115 mg of Pb
The compounds Br2 and ICl have the same number of electrons yet Br2 melts at -7.2 C and ICl melts at 27.2 C
Compute ΔU for the transformation; a = 0.136 m6Pa mol-2 ; b = 0.0391 L/mol.
find the molarity of an unknown NaOH solution if 0.5536 g of the KHP required 37.00 mL of a NaOH solution.
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